I recently saw this with my brother on HBO. It is a good movie, albeit kind of slow for today's standards.

But the best scene -for me anyway- is when the nanny hangs herself, with a gleeful smile and yelling "It's all for you!"... in Damien's birthday party!

-Commanderraf

P.S.: This movie was ultramegahyperbanned in Mexico on its release. My dad originally saw it in a midnight showing in a underground cinema in Mexico City's Colonia Roma that specialized in showing ultramegahyperbanned movies like this.

For some reason this scene didn't pop to mind when i noted the movie. I thought it'd be the impalement.
But looking back, I think I remember in some making of feature, or perhaps a scariest horror movie feature, that the actor says this scene still gives him chills.